Trolley harp and wheel assembly



Nov, 13, w28. l 1,691,805

T. FAULTON TROLLEY HARP AND WHEELv ASSEMBLY Filed Dec. 19, 1927 Patented Nov. 13,

UNITED 'qsrATE-s --PATENTOFF COMPANY, oP'JoHNsTowN, PENNSYLVANIA, A CORPORATION 0F PENNSYLVANIA.

l TROLLEY HARP AND WHEEL 'Assnmrm Application mcd December v1e, 192'?. serial No. 241,118. f

The vlinvention aims to provide a newand improved assembly of trolley wheel and harp, in which novel provision is'made for normally holding the wheel in place, yet for permitting removal thereof', when desired, and for collecting current from vthe wheel and conducting iti togthe trolley pole or lother con-f above brieayaeseribed, iuuthat within the scope ofthe invention-as' claimed, variations maybe made.' Y

3 denotes a trolley pole having a head 4 to which a fixed harparm 5 and a removable harp arm 6, are secured b screws or the like 7-8 respectively. The xed arm 5 1s prcvided at its inner side with an integral stud 9`preferably of tubular form and communicating with an opening 10 which is normal-` ly closed by a screw plug 11, removal of the .plug serving to permit the injection of grease through the tubular stud to lubrlcate the wheel bearing hereinafter described.

A 'race ring 12 is pressed tightly upon the stud 9, ball or roller bearings 13 contact with the outer side of this race ring, and a second race ring 14 surrounds said ball or roller bearings. Pressed upon the race ring 14, is an insulating ring 15 which tightly engages the peripheral wall 16 of a relatively large recess 17 in one end of the trolley wheel 18, all of the parts 9-12-13.-14-15, being received in this recess, which receives lubricatin grease from the tubular stud 9, 'so 4154 as to e ectively lubricate the ball orroller bearings. Electric current is prevented from traveling through these bearings from the wheel by the insulating ring 15- In theside of the wcheel y1.8', opposite the j recess 17, is a second recess 19 which is axially alinedA with said recess 17, 'the two recesses being of' course of circular outline. Whereas the outer end of recess 17 is closed by the fixed arm 5the outer end of recess 19 is closed by the removable arm 6, and the latter is V'prov'idedrwith a non-circularlopening 20 in TnoMAs nAunToN', on JoHNsToWN, vPrmNsYnvArnA,,AssIeNonTo ,PENN MACHINE i communication with said recess 19. A'col- I lector plate'21 is disposed in the ir'iner-po'rtion of the'recess 19 and contactswith the n inner side tl1ereof,-the outer side of said coli' lector plate'beinr provided with an integral,y

non-circular pro Iection"22whic`h passes non`- rotatablyl but slldably through the opening 2O and has its outer endreceived in an elongated recess 23 formed in theyouter's'ide of the arm 6. A terminal plate 24 on one end of a, flexible conductor 25, contactswith the outer end of the projection 22 Aand is secured therei to by a screw 26,'a similar terminal platc27 on thefother end of said conductor 25, being disposed within the lower portion of therecess 23, in contact with the inner side of the f latter. A- spring 28 lies against 'the outer 'sides of the terminal plates 24L27,'ai`1d a screw 29 passes through the lower: end of this spring and through the plate27, into thev f arm 6, to secure said spring andplate 27 to Y said arm. This spring, like theparts 2425' 27, is disposed in and protected by the recess 23, and said spring acts to -hold the collector plate 21 in contact with the trolley wheel 18, to receive current from the latter. Petroleum jelly or the like may be packed into the recess 19 to lubricate the contacting surfaces of the wheel and the plate 21.

The plate 24 is of greater size than the v projection 22, so that its peripheral portion j 30 projects beyond said projection to strike the inner face of the recess 23 and hold said projection against dropping from the opening 20, when the arm 6 is detached from the head 4. This detachment ofarm 6 is efected when a worn trolley wheel is to be taken 0E and a. new wheel substituted, and*it will beobserved that the parts 21-22P-24-` 26 25-27-28--29, are bodily removable with said arm, giving unobstructed access to the wheel for removing itand .permitting substitution of a new wheel with equal ease.

Excellent results are obtainable from the general construction shown and described and it is therefore preferably followed. However, within the scope ofthe invention Y as claimed', numerous variations in form, proin one of said recesses mountingsaid Wheel on said fixed arm, a spring-pressed collect-or plate in the other of said recesses rovided with a non-circular projection on lts outer side, said removable arm having a non-circular opening through which said projection lpasses slidably and non-rotatably, and a: fiexible conductor at the outer side of said removable arm secured at one end there-tio and secured at its other end to the outer end of said projection."

2. A/structure as specified in claim 1; together with means rigid with said projection to` strike the outer side of said removable arm and prevent falling of said projection from the aforesaid opening upon removal of said removable arm.

3. A trolley harp having a removable arm and a fixed arm, a trolle wheel between said arms -having axially a ined recesses whose outer sides are closed thereby, bearingl means in one of said recesses mounting said wheel on said fixed arm, a spring-pressed collector plate` in the other of said recessesI provided with a noncircular projection omits outer side, said removable arm having a non-circular opening through which said projection asses slidably and non-rotatably, and a flexlble conductor at the outer side of said removable arm Vsecured at one end thereto and secured at its other end to the outer end of said projection, said other end of said conductor having-a portion projecting beyond vWhioh Saal said projection-*to .prevent ialling ovffthe latterfrom said opening upon detachment ofw'35 said removable arm. Y 4. A trolleyharp having aremovable'arm and a fixed` arm, a trolley Wheel between said projection on its outer side, saidremovable yarm havin@r a non-circular openinO` throughA projection passes `slidably 4butl non-rotatably, a flexible conductor at the z 1 outer side of said removable arm provided at its ends with terminal plateslymgagainst-f 50 at the outer side of. said conductor having the arm and projection respectively, a spring one end in contact with the projection-engagi ing terminal plate, `a. screw passingV through and the other a threaded into the other end of said sprin of said terminalplates an said removable arm to securesaid spring and said other lterminal plate tothis arm," anda, means securing said projection-engaging ter:

minal plate to said projection. I ,f 5. A structure as specified in claim 4; the outer-*side of said removabley arm being 'profV vided with a recess in which said spring and said conductor are disposed.' c f,

I In testimony whereof have hereuntoa/flax fixed my signature. Y, .l

-' THOMAS HAULTON. 

